The central processing unit or CPU in a computer can get quite hot while it is operating. It is necessary to install a heat sink to prevent overheating.

All computers have a Central Processing Unit (CPU), which is basically the computer’s brain and consists of the logic circuitry that performs the instructions of a computer’s programs. While the CPU is operating, it can generate a lot of heat.

This heat needs to be removed from the computer hardware as quickly and efficiently as possible to prevent damage to the computer and its hardware. To keep the computer’s CPU cool, you might need to install a new CPU cooling fan and heat sink, which is a device that absorbs excess heat.

Make sure you also check out our Best CPU Coolers Buying Guide 2017 if your looking for a new cooling unit.

Disassemble the Computer

Turn off the computer and pull out the power cord and other cable from the computer. Set the computer on an even work surface.

Remove the case screws that secure the panel cover on the back of the computer with a screwdriver. Pull the panel cover off the PC, and place it in a safe location. You might need to remove more screws to remove the entire case cover if your computer does not have an access panel for the motherboard.

Slip on an anti-static wrist strap onto one arm and clip the other end of the strap to a metal object in the interior of the computer case. This is an antistatic device used to safely ground a person working on sensitive electronic materials or devices.

Install a Heat Sink

Find the cooling fan located on top of the processor. The cooling fan is about 2 or 3 inches wide and is placed on top of the CPU.

Squeeze out 1 drop of thermal paste in the middle of the CPU. Spread around the thermal paste across the die, the area of the semi-conducting material, of the CPU with a plastic bag. Make sure the thermal paste is evenly spread around the die.

Hold the heat sink over the screw openings on the motherboard, surrounding the CPU. Attach the heat sink with a screwdriver, but make sure you do not over tighten. If the heat sink is not attached correctly, it can vibrate and possibly damage the CPU. Locking clamps can also be used instead of screws. However, not all heat sinks operate with all computers, so make sure it is compatible.

Insert the fan’s power cable into the slot on the motherboard.

Re-assemble the computer in the reverse order. Replace the access panel and any screws with a screwdriver. Test the heat sink and new cooling fan to see if it works properly.


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